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source: svn/trunk/src/VeryForward.cc@ 159

Last change on this file since 159 was 100, checked in by severine ovyn, 16 years ago

Remove datacard bug + CaloTowers OK
File size: 6.0 KB
Line 
1 /*
2 * ---- Delphes ----
3 * A Fast Simulator for general purpose LHC detector
4 * S. Ovyn ~~~~ severine.ovyn@uclouvain.be
5 *
6 * Center for Particle Physics and Phenomenology (CP3)
7 * Universite Catholique de Louvain (UCL)
8 * Louvain-la-Neuve, Belgium
9 * */
10
11#include "interface/VeryForward.h"
12#include "interface/SmearUtil.h"
13#include "TRandom.h"
14
15#include <iostream>
16#include <sstream>
17#include <fstream>
18#include <iomanip>
19
20#include<cmath>
21
22
23using namespace std;
24
25
26//------------------------------------------------------------------------------
27
28VeryForward::VeryForward(string DetDatacard) {
29
30 DET = new RESOLution();
31 DET->ReadDataCard(DetDatacard);
32
33 //Initialisation of Hector
34 relative_energy = true; // should always be true
35 kickers_on = 1; // should always be 1
36
37 // user should provide : (1) optics file for each beamline, and IPname,
38 // and offset data (s,x) for optical elements
39 beamline1 = new H_BeamLine(1,500.);
40 beamline1->fill("data/LHCB1IR5_v6.500.tfs",1,"IP5");
41 beamline1->offsetElements(120,-0.097);
42 H_RomanPot * rp220_1 = new H_RomanPot("rp220_1",220,2000); // RP 220m, 2mm, beam 1
43 H_RomanPot * rp420_1 = new H_RomanPot("rp420_1",420,4000); // RP 420m, 4mm, beam 1
44 beamline1->add(rp220_1);
45 beamline1->add(rp420_1);
46
47 beamline2 = new H_BeamLine(1,500.);
48 beamline2->fill("data/LHCB1IR5_v6.500.tfs",-1,"IP5");
49 beamline2->offsetElements(120,+0.097);
50 H_RomanPot * rp220_2 = new H_RomanPot("rp220_2",220,2000);// RP 220m, 2mm, beam 2
51 H_RomanPot * rp420_2 = new H_RomanPot("rp420_2",420,4000);// RP 420m, 4mm, beam 2
52 beamline2->add(rp220_2);
53 beamline2->add(rp420_2);
54
55
56}
57
58void VeryForward::ZDC(ExRootTreeWriter *treeWriter, ExRootTreeBranch *branchZDC,TRootGenParticle *particle)
59{
60 int pid=abs(particle->PID);
61 float eta=fabs(particle->Eta);
62
63
64 TRootZdcHits *elementZdc;
65 TLorentzVector genMomentum;
66 // Zero degree calorimeter, for forward neutrons and photons
67 if (particle->Status ==1 && (pid == pN || pid == pGAMMA ) && eta > DET->VFD_min_zdc ) {
68 genMomentum.SetPxPyPzE(particle->Px, particle->Py, particle->Pz, particle->E);
69 // !!!!!!!!! vérifier que particle->Z est bien en micromÚtres!!!
70 // !!!!!!!!! vérifier que particle->T est bien en secondes!!!
71 // !!!!!!!!! pas de smearing ! on garde trop d'info !
72 elementZdc = (TRootZdcHits*) branchZDC->NewEntry();
73 elementZdc->Set(genMomentum);
74
75 // time of flight t is t = T + d/[ cos(theta) v ]
76 //double tx = acos(particle->Px/particle->Pz);
77 //double ty = acos(particle->Py/particle->Pz);
78 //double theta = (1E-6)*sqrt( pow(tx,2) + pow(ty,2) );
79 //double flight_distance = (DET->ZDC_S - particle->Z*(1E-6))/cos(theta) ; // assumes that Z is in micrometers
80 double flight_distance = (DET->VFD_s_zdc - particle->Z*(1E-6));
81 // assumes also that the emission angle is so small that 1/(cos theta) = 1
82 elementZdc->T = 0*particle->T + flight_distance/speed_of_light; // assumes highly relativistic particles
83 elementZdc->side = sign(eta);
84
85
86 }
87
88}
89void VeryForward::RomanPots(ExRootTreeWriter *treeWriter, ExRootTreeBranch *branchRP220,ExRootTreeBranch *branchFP420,TRootGenParticle *particle)
90{
91 int pid=abs(particle->PID);
92 float eta=fabs(particle->Eta);
93
94 TRootRomanPotHits* elementRP220;
95 TRootRomanPotHits* elementFP420;
96
97 TLorentzVector genMomentum;
98 genMomentum.SetPxPyPzE(particle->Px, particle->Py, particle->Pz, particle->E);
99 // if forward proton
100 if( (pid == pP) && (particle->Status == 1) && (fabs(genMomentum.Eta()) > DET->CEN_max_calo_fwd) )
101 {
102 // !!!!!!!! put here particle->CHARGE and particle->MASS
103 H_BeamParticle p1; /// put here particle->CHARGE and particle->MASS
104 p1.smearAng();
105 p1.smearPos();
106 p1.setPosition(p1.getX()-500.,p1.getY(),p1.getTX()-1*kickers_on*CRANG,p1.getTY(),0);
107 p1.set4Momentum(particle->Px,particle->Py,particle->Pz,particle->E);
108
109 H_BeamLine *beamline;
110 if(genMomentum.Eta() >0) beamline = beamline1;
111 else beamline = beamline2;
112
113 p1.computePath(beamline,1);
114
115 if(p1.stopped(beamline)) {
116 if (p1.getStoppingElement()->getName()=="rp220_1" || p1.getStoppingElement()->getName()=="rp220_2") {
117 p1.propagate(DET->RP_220_s);
118 elementRP220 = (TRootRomanPotHits*) branchRP220->NewEntry();
119 elementRP220->X = (1E-6)*p1.getX(); // [m]
120 elementRP220->Y = (1E-6)*p1.getY(); // [m]
121 elementRP220->Tx = (1E-6)*p1.getTX(); // [rad]
122 elementRP220->Ty = (1E-6)*p1.getTY(); // [rad]
123 elementRP220->S = p1.getS(); // [m]
124 elementRP220->T = -1; // not yet implemented
125 elementRP220->E = p1.getE(); // not yet implemented
126 elementRP220->q2 = -1; // not yet implemented
127 elementRP220->side = sign(eta);
128
129 } else if (p1.getStoppingElement()->getName()=="rp420_1" || p1.getStoppingElement()->getName()=="rp420_2") {
130 p1.propagate(DET->RP_420_s);
131 elementFP420 = (TRootRomanPotHits*) branchFP420->NewEntry();
132 elementFP420->X = (1E-6)*p1.getX(); // [m]
133 elementFP420->Y = (1E-6)*p1.getY(); // [m]
134 elementFP420->Tx = (1E-6)*p1.getTX(); // [rad]
135 elementFP420->Ty = (1E-6)*p1.getTY(); // [rad]
136 elementFP420->S = p1.getS(); // [m]
137 elementFP420->T = -1; // not yet implemented
138 elementFP420->E = p1.getE(); // not yet implemented
139 elementFP420->q2 = -1; // not yet implemented
140 elementFP420->side = sign(eta);
141 }
142
143 }
144 // if(p1.stopped(beamline) && (p1.getStoppingElement()->getS() > 100))
145 // cout << "Eloss =" << 7000.-p1.getE() << " ; " << p1.getStoppingElement()->getName() << endl;
146 } // if forward proton
147}
148
149 // Forward particles in CASTOR ?
150 // /* if (particle->Status == 1 && (fabs(particle->Eta) > DET->MIN_CALO_VFWD)
151 // && (fabs(particle->Eta) < DET->MAX_CALO_VFWD)) {
152 //
153 //
154 // } // CASTOR
155 // */
156 //
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